After coding a document into a digital signal, it can be sent by telephone, telex or satellite to the receiver where the signal is decoded and an exact copy of the original document is made. What is it called?

Ethernet networks can be cabled in a number of topologies, depending on what works best in each environment. As more nodes are added, the efficiency of Ethernet decreases. Select the best answer as to why Ethernet becomes less efficient as size increases.

Which of the following divides the high speed signal into frequency bands?

Which of the following statements is correct?

A 4 KHz noiseless channel with one sample everyper sec, is used to transmit digital signals. Find the bit rate (bits per second) that are sent, if CCITT 2.Mbps encoding is used.

How can you see the address of the DHCP server from which a client received its IP address?

What is the name of the device that converts computer output into a form that can be transmitted over a telephone line?

How many class A, B, and C network IDs can exist?

The fundamental requirements of private-to-public network interconnection methods which need to be provided in gateways is/are

A network that requires human intervention of route signals is called a

The difference between a multiplexer and a statistical multiplexer is

Which of the following is separated by a subnet mask?

The signal to noise ratio for a voice grade line is 30.1 dB (decibels) or a power ratio of 1023:The maximum achievable data rate on this line whose spectrum ranges fromHz toHz is

Distributed Queue Dual Bus is a standard for

You are working with a network that is 172.16.0.0 and would like to have the maximum number of hosts per subnet. This assumes support for eight subnets. What subnet mask should you use?

Which of the following files is used for NetBIOS name resolution?

What is the number of separate protocol layers at the serial interface gateway specified by the X.standard?

Many data communication networks have been established which provide a wealth of on-demand information services to people at home. What is the name of the system which provides an interactive, graphics-rich service that permits user to select what they want?

Which IP address class has few hosts per network?

Microprogramming is

Which of the following device copies electrical signals from one Ethernet to another?

Stephanie is in charge of a small network and wants to make it simple but secure. The users want to have full control over their data and still be able to share data with the rest of the office. The networking knowledge of the office staff is basic. Which network(s) would be the best for Stephanie to set up?

The term "remote job entry" relates to

Which of the following performs modulation and demodulation?

Which file transfer protocol uses UDP?

In a _____ topology, if there are n devices in a network, each device has n - 1 ports for cables.

The 32-bit internet addresswill be written in dotted decimal notation as

What is the first octet range for a class C IP address?

What is the minimum number of wires needed to send data over a serial communication link layer?

Which of the following is not a standard synchronous communication protocol?